Incandescent-lamp lock and seal.



H. DAVIES & J.-O0OKE.

INCANDESCENT LAMP LOCK AND SEAL.

APPLICATION FILED JULY 9, 1912.

1,062,228. Patented May 20, 1913.

UNITED sTA as PATENT OFFICE.

HUGH DAVIEIB AND JAMES COOKE, OF WEST NEW YORK, NEW J'ERSL Y.

INCANDESCENT-LAMP LOCK AND SEAL.

Specification of Letters Patent.

Application filed July 9, 1912.

Patented May 20. if) t 1;.

Serial No. 708,461.

To al l whom it may concern Be it known that we, HUGH DAVIES and JAMESCoons, citizens of the United States, and residents of West New York,county of Hudson, and State of New Jersey, have in Vented certain newand useful Improvements in Incandescent-Lamp Locks and Seals, of whichthe following is a specification.

In hotels lighted by electricit and in large office buildin s similarlylig ted, considerable loss resu ts from the theft of incandescent lampbulbs and particularly of that class of bulbs fitted with tungsten andlike expensive filaments. In hotels it frequently) occurs that theguests remove the lam ulbs from the sockets and connect cha ng dishesand other electric cooking utensils and electrically heated irons to thelight circuit. This frequently results in over-loading the circuit andthe consequent burning out of the fuses. Where the fuses are notdestroyed there is an excessive consumption of current which is a directloss to the hotel.

It is the main object of this invention to provide a simple means forlocking the incandescent bulb to the socket in such manner that itcannot be removed without the removal of the lock and seal.

Another object of the invention is to provide a simple locking andsealing device which may be readily applied to the lamp sockets now inuse and which when in position will permit the lamp to be rotated to acertain extent within its socket so that the lamp bulb is'not rigidlybound or locked.

Another object of the invention is to pro vide a. very simple lock andseal which may readily be placed in position on a lamp socket, and toprovide means whereby said lock may be removed and the lamp therebyreleased without destroying the locking device so that it may be usedagain.

There are other objects and advantages of the invention which willappear her-*inafter.

In the drawing Figure 1 is an elevation of an incandescent lamp bulb andsocket with the locking and sealing device in posi tion; Fig. 2 asimilar view showing the locking and sealing'device in sectional view;fa ten the lililtill 'f bani in prnsvd with if de ired.

.be of any desired construction.

The lamp is prmidml with the usual threaded metal plug 4 whit-h isadapted to screw into the socket, said plug being slightly larger indiameter than the lamp at the point where the lamp oud orders the plug.This forms a lmlililt'i i as lil)\'\li clearly in Fig. 2 ot the drawing.

The l()('l( and seal oon-ists of a split amuilar band i' which isadapted lo onrir lo the end of the lamp sot-lam. the two ends of sal 'lband projecting outwardly to form the arms 7. This band is made ol lou eh, readily bendable. n nu'osiliont material. prol'rrabl i' metal. Thislot-king band, as shown in the drawing is formed with an annular slot 8substantially midway between the longitudinal edges thereof, and extnding awross illlrslot are transver e outwardly rurwd bridge pieces 9.The bond i) lil within the slot 8 when the lUt'lC is in position and thobridge pieces 9 urve outwardly around said brad, as shown rlmnlv in 1hdrawinzw It is manifest that the bridge plot-rs may in: as liroid asdesired and that the l t may do lll llii. iutlei' '21 the lockingbandwill be tornn-d with a. groove in its inner sin-law to rrwi't'o th nbrad 3 ol the lamp sorkol. 'lhu lovliinij band is provided along a no ofits lnllfflUhii ll2Il9(lf 1't with an in'wardiy t\'i'vll li e in;llangrr l() whit-h is :adopinl to Ii! mid r the ll(lll(l('l' .3 formedl. the lamp iilltif when the locking band i iwnl around :i iamp sot-kc!containing a lamp bulb. 'l" ro ls of tho locking band i\lrud ouiwardl;and ar prel erabl br ught Menthol and rigidly svrllied in position bl!ll.!il\ ol' lubular riwtl1. 'lhoso rivet arr pzol'ora l i romparatiulv sol t motal 1 il-ul lhox only be "vadily plmrd in po ition b:Ilizlll ll( 1lifl zilil't'lw' lie Fig. 3 a horizontal sectional view ofthe I the rivet II are piawd ill pit-Jinn; the two n;

looking and sealing device removed from ends 7 of said strip an buntinn-Mill to the main body of the loekin band, as shown clearly in Figs.1 and 3 0 the drawing.

It is manifest that by placing the locking band around the lamp socketwith the look ing flange 10 under the shoulder 5, the bead 3 projectinginto the slot 8 and then riveting together the two ends 7 of the lockingband, the lamp bulb is securely locked in position and it will beimpossible to detach said lamp from said socket without first removingthe locking band. It is also manifest that the lamp may be turnedslightly in the lamp socket after the clamping ring is in positionthereon. This is important for the reason that if the lamp is rigidlylocked againstall movement it is likely to be broken by personsendeavoring to detach it. If, however, the lamp turns readily for alimited distance and then becomes rigidly locked they are warned thatthe lamp is not secured in p0 sition in the ordinary manner and noattempt will be made to force the screw plug outwardly through theclamping and seal ing device.

We preferably form the tubular rivets of soft metal so that they may bereadily removed with a proper tool. They will curely hold the two endsof the locking band together under ordinary conditions and will preventthe detachmentot the locking band, unless some special tool is employedto re move the fastening rivets.

It will, of course, be understood that any suitable form of fasteningdevice may be employed and we do not wish to be limited in this respect.other changes and modifications may be made in the structure within thescope of the invention.

It will, of course, be understood that the removable tubular rivetsmerely exemplify one form of removable fastening means which may beemployed in this device. Any suitable form of rei'novable or breakablefastening devices may be employed. and we, of course do not wish to belimited in this respect.

What we claim is:

1. The combination of a lamp socket having an annular bead near its openend, a lamp bulb provided with a screw plug adapted to fit said lampsocket, a sealing and locking band adapted to embrace the lamp socketand to receive the bead of said socket, a locking flange on said bandadapted to engage the plug 01; the lamp bulb to prevent its withdrawalfrom the lamp socket, the ends of said band extending outwardly andbeing formed of readily bendable, non-rtsilient material and adapted tobe bent back upon themselves to bring them close to the side of the bodyof the band. and readily removable .neuns for rigidly connectingtogether the ends oi the band.

2. The (,Qlillilllztilfill of a lamp socket hav- It is also manifestthat l l l l i i i i groove adapted to receiw 63.1

ing an annular bead near its open and. v lamp bulb provided with a screwplug ad 1 ed to fit said lamp socket, a sealing; and u 1. ing bandadapted to embrace the lam 1 and to receive the bead of said sot-lint, ahe i;- ingflange on said band adapted toengage plug on the lamp bulb toprevent its drawal. from the lamp socket, the. ends z: said bandextending outwaidlj. an? formed of readily bendable, non-r4.

material and adapted to be bent back i themselves to bring them close tothe of the body of the band, and readily r1 able, soft metal fasteningmeans for U connecting together the ends of the ban...

3. The combination of a lamp ing an annular bead near its open 4' lampbulb provided with a. screw pl. 1 ed to tit said lamp socket. a seaiiiing band adapted to embrace ii and to receive the bead oi locking flangeon said band Juli gage the plug on the lamp its withdrawal from thelamends of said band extending: it being formed of readily been. silientmaterial and adapted to upon themselves to bring them body of the band,and a soit :imtai rigidly connecting together tin: band.

4. A lamp lock and sea (ii single piece of metal bent to nular band andprovided with an a lamp socket, and an an! tendii'ig flange adapted toi, ed plug of a lamp to lo socket and ibri'ned at h m ing bci'idziibleends which i: bring them close to the ;--1 the lock, and means forbendable ends together to in {i and permanently secure 1 sition.

A lamp lock and seal a: nular band adapted to n end of a lamp socket and1; means to receive an annula on said socket. said band bids with animvardly GXtQiltil'; to engage the screw plug (H. the lamp to thesocket. an i wardly extending readiiy lain sot't metal rivets torriskends together to pcrinai. locking band to the sock t being adaptedto be bent cause them to lie close id i body of the band.

('3. A lamp le ik and sea single piece of metal bent to lar baudprovided with an Mimi of a lamp socket, an an l tending flange adaptedto engage the thread- In testimony whereof we hereunto afiix ed plug 05the lamp to lock the lamp to the our signatures in the presence of twowit- 1) socket, the ends of the bend extending outnesses this 8th (layof July 1912.

ardly ir :=':;1 the body of the hand and HUGH DAVIES. means fox-ermanent1y securin together JAMES COOKE.

the outwe extending ends 0 the hand \Vitnesses:

to perman z=tly lock it in position on the LTLLIAN MCGUIRE,

lamp socket F. R. MILLER.

